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单选题 In order to prevent the bridge crane maintenance personnel from electric shock, it is required to install ( ) at the door of the cab to the vehicle driver ( or bridge )
学科：桥门式起重机技能操作Bridge and Gantry Crane Skill Operation（Chinese-English）
时间：2024-08-26 12:47:37
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题目1单选题
The overload protection device equipment of the crane is ( )A. CraneB. Lifting weight limitersC. Bridge craneD. Gantry crane
题目2单选题
In order to prevent the bridge crane maintenance personnel from electric shock, it is required to install ( ) at the door of the cab to the vehicle driver ( or bridge )A. Automatic interlock deviceB. Lifting weight limitersC. BufferD. Torque limiter
题目3单选题
A safety device that absorbs the energy of the collision between the crane and the object and works after the failure of the brake and end switch of the crane is ( )A. BrakeB. Automatic interlock deviceC. BufferD. Limiter
题目4单选题
When the material is likely to accumulate on the track and become an obstacle to the operation, the crane and the lifting trolley running on the track should be installed under its frame ( or end beam ) and under the trolley frame ( )A. Weight limiterB. Limit position limiterC. BufferD. Rail cleaning device
题目5单选题
When the crane pickup device rises to the design specified lifting height, should be able to automatically cut off the power source of the lifting of the settings are ( )A. Mechanical torque limiterB. Track cleaning deviceC. Electronic Torque LimiterD. Limit Position LimiterII.Multiple choice questions ( 8 points for each question, a total of 40 points )
题目6多选题
Port cranes, outdoor gantry cranes and other cranes wind anti-slip devices are mainly. ( )A. rail clamp (wheel) deviceB. anchoring deviceC. iron shoeD. buffer
题目7多选题
The bridge crane safety protection device includes ( )A. Weight limiterB. Limit position limiterC. BufferD. Rail cleaning device
题目8多选题
The comprehensive error of the weight limiter of the bridge crane should not be greater than 5 % and can be recorded. ( )A. Lifting timeB. Lifting timesC. Lifting weightD. Lifting site
题目9多选题
The rising and falling limit position limiters of the gantry crane should immediately cut off the power supply, and the guaranteed distance at the end of the stopped track and the proximity of the crane to each other are ( )A. 200mmB. 500mmC. 300mmD. 600mm
题目10多选题
Bridge gantry crane when the speed exceeds 120m/min, the general buffer can not meet the requirements, must be used ( ) and other safety guards.A. Light-type anti-collision deviceB. Ultrasonic anti-collision deviceC. Infrared reflectorD. spring bufferIII.Judgment questions( 6 points for each question, a total of 30 points )
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